Had the privalige of watching his fights in the 2004 mundials. Never in my life have I seen an atmosphere and crowd as wild as that in a grappling or bjj tournament, and it was 99 percent from his fans.
They were all grouped up in one corner of the stadium, with huge drums, singing 'OOOOOO TERERE!!! OOOOOOH TEERERE' or something, his fight with Roger Gracie where he broke his arm, ran around the mat for 3 minutes because he was winning on points, madness. Never seen anything like it since.

wasn't he the dude who went nuts on a plane and got locked up in a jail in Florida?

Yeah he got addicted to crystal meth and his personality spiralled downwards very quickly.last time i heard tho he was on the mend and teaching in the favelas in rio for free (sum sort of community run bjj school for the people in the favelas)